html,
body {
    height: 100%;
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}

.box {
    width: 40%;
    height: 40%;
    min-width: 320px;
    min-height: 320px;
    background: rgba(255, 255, 255, .85);
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .25);
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

h2 {
    margin-bottom: 0px;
    font-weight: normal;
    text-align: center;
}

.input-row {
    width: 100%;
    height: 44px;
    margin: 8px 0;
    display: flex;
    gap: 8px
}

input,
button {
    height: 100%;
    box-sizing: border-box;
    font-size: 15px;
    border: 1px solid #ccc;
    border-radius: 4px
}

input {
    flex: 1;
    padding: 0 12px
}

button {
    padding: 0 12px;
    background: #fff;
    color: #ff6633;
    border: 1px solid #ff6633;
    cursor: pointer
}

.reg-btn {
    width: 100%;
    height: 44px;
    margin-top: 12px;
    background: #ff6633;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 15px;
    cursor: pointer
}

.link {
    margin-top: 12px;
    font-size: 13px;
    text-align: center
}

.link a {
    color: #ff6633
}